[PeterT]

I can replicate this. Looks as if there is an issue in the Styles section of the paper.

Spoiler:

Fetch news from The New York Times (Web)
Conversion options changed from defaults:
verbose: 2
output_profile: 'kobo'
Resolved conversion options
calibre version: 8.2.1
{'add_alt_text_to_img': False,
'asciiize': False,
'author_sort': None,
'authors': None,
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'change_justification': 'original',
'chapter': None,
'chapter_mark': 'pagebreak',
'comments': None,
'cover': None,
'debug_pipeline': None,
'dehyphenate': True,
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'duplicate_links_in_toc': False,
'embed_all_fonts': False,
'embed_font_family': None,
'enable_heuristics': False,
'epub_flatten': False,
'epub_inline_toc': False,
'epub_max_image_size': 'none',
'epub_toc_at_end': False,
'epub_version': '2',
'expand_css': False,
'extra_css': None,
'extract_to': None,
'filter_css': None,
'fix_indents': True,
'flow_size': 260,
'font_size_mapping': None,
'format_scene_breaks': True,
'html_unwrap_factor': 0.4,
'input_encoding': None,
'input_profile': <calibre.customize.profiles.InputProfile object at 0x7f2a02014d90>,
'insert_blank_line': False,
'insert_blank_line_size': 0.5,
'insert_metadata': False,
'isbn': None,
'italicize_common_cases': True,
'keep_ligatures': False,
'language': None,
'level1_toc': None,
'level2_toc': None,
'level3_toc': None,
'line_height': 0,
'linearize_tables': False,
'lrf': False,
'margin_bottom': 5.0,
'margin_left': 5.0,
'margin_right': 5.0,
'margin_top': 5.0,
'markup_chapter_headings': True,
'max_toc_links': 50,
'minimum_line_height': 120.0,
'no_chapters_in_toc': False,
'no_default_epub_cover': False,
'no_inline_navbars': False,
'no_svg_cover': False,
'output_profile': <calibre.customize.profiles.KoboReaderOutput object at 0x7f2a009a0450>,
'page_breaks_before': None,
'prefer_metadata_cover': False,
'preserve_cover_aspect_ratio': False,
'pretty_print': True,
'pubdate': None,
'publisher': None,
'rating': None,
'read_metadata_from_opf': None,
'recipe_specific_option': None,
'remove_fake_margins': True,
'remove_first_image': False,
'remove_paragraph_spacing': False,
'remove_paragraph_spacing_indent_size': 1.5,
'renumber_headings': True,
'replace_scene_breaks': '',
'search_replace': None,
'series': None,
'series_index': None,
'smarten_punctuation': False,
'sr1_replace': '',
'sr1_search': '',
'sr2_replace': '',
'sr2_search': '',
'sr3_replace': '',
'sr3_search': '',
'start_reading_at': None,
'subset_embedded_fonts': False,
'tags': None,
'test': False,
'timestamp': None,
'title': None,
'title_sort': None,
'toc_filter': None,
'toc_threshold': 6,
'toc_title': None,
'transform_css_rules': None,
'transform_html_rules': None,
'unsmarten_punctuation': False,
'unwrap_lines': True,
'use_auto_toc': False,
'verbose': 2}
InputFormatPlugin: Recipe Input running
Downloading recipe urn: builtin:nytimes
Trying to get latest version of recipe: nytimes
Using user agent: Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
Recipe specific options:
web = Web Edition
days = 7
comp = no
Using today's paper from: 2025/04/10
Panama Canal Ship Pilot Navigates Tricky Waters, and Trump: https://www.nytimes.com/2025/04/08/w...hip-pilot.html
How a British Dad Made Comedy Gold Imagining Two Toddlers Chatting: https://www.nytimes.com/2025/03/20/w...dy-uk-dad.html
Facing Early-Onset Alzheimer’s, She Fought for the Right to Plan Her Death: https://www.nytimes.com/2025/02/25/w...de-quebec.html
The Hong Kong Artist Who Got Fired From McDonald’s: https://www.nytimes.com/2025/02/21/w...-activism.html
A French Cartoonist Draws a Window Into the Middle East: https://www.nytimes.com/2025/01/24/w...nce-syria.html
No Second Lady, No Problem: Greenland’s Dog Sled Race Goes Barking On: https://www.nytimes.com/2025/03/29/w...nce-trump.html
In Japan, an Iceless Lake and an Absent God Sound an Ancient Warning: https://www.nytimes.com/2025/03/28/w...mate-lake.html
Dolphin Hunting Is Their Tradition. Rising Seas Have Made It a Lifeline.: https://www.nytimes.com/2025/03/26/w...n-islands.html
What Makes Sydney’s New Beach Different? It’s 50 Miles Inland.: https://www.nytimes.com/2025/03/25/w...ndi-beach.html
To Him, Americans Were Always Heroes. He’s Not So Sure About Today’s.: https://www.nytimes.com/2025/03/24/w...-brothers.html
Derrumbe en República Dominicana: hay al menos 113 muertos tras caer el techo de una discoteca: https://www.nytimes.com/es/2025/04/0...ome-techo.html
Para Xi, el líder de China, ceder ante Trump no es una opción: https://www.nytimes.com/es/2025/04/0...aranceles.html
El caso judicial del príncipe Enrique sobre seguridad en el Reino Unido: lo que sabemos: https://www.nytimes.com/es/2025/04/0...audiencia.html
El papa, convaleciente, sorprende a los peregrinos con una aparición pública: https://www.nytimes.com/es/2025/04/0...san-pedro.html
Vuelan las acusaciones en Corea del Sur tras el suicidio de una actriz: https://www.nytimes.com/es/2025/04/0...-soo-hyun.html
Found section: World
Can Using a Dumber Phone Cure ‘Brain Rot’?: https://www.nytimes.com/2025/04/06/t...brain-rot.html
The U.K. Government Wouldn’t Ban Phones in Schools. These Parents Stepped Up.: https://www.nytimes.com/2025/04/01/w...childhood.html
Facebook Returns to Its Roots: Showing Posts From Friends and Family: https://www.nytimes.com/2025/03/27/t...iends-tab.html
If TikTok Is Here to Stay, What Does That Mean for Us?: https://www.nytimes.com/2025/03/26/t...-deadline.html
Hugues Oyarzabal, Surfing Star Who Rode With a Camera, Dies at 39: https://www.nytimes.com/2025/03/20/s...fing-dead.html
Found section: Technology
The Masters: A Gesundheit Unlike Any Other: https://www.nytimes.com/2025/04/10/u...allergies.html
The Legacy of the Black Caddies at the Masters: https://www.nytimes.com/2025/04/09/s...s-augusta.html
Dave Pelz, Scientist Turned Golf Guru of the Short Game, Dies at 85: https://www.nytimes.com/2025/04/05/s...pelz-dead.html
Ex-Yankees Player Brett Gardner’s Son Died From Carbon Monoxide, Officials Say: https://www.nytimes.com/2025/04/03/w...use-death.html
He Wore a ‘Patriotic’ Hat to a Blue Jays Game. It Got Him Ejected.: https://www.nytimes.com/2025/04/01/s...ected-hat.html
Found section: Sports
Bizarre Sea Creatures Illuminate the Dawn of the Animal Kingdom: https://www.nytimes.com/2023/05/17/s...b-jellies.html
Science Museums Take Stock of 1.1 Billion Objects From Around the World: https://www.nytimes.com/2023/03/23/s...llections.html
Ancient DNA Reveals History of Hunter-Gatherers in Europe: https://www.nytimes.com/2023/03/01/s...rs-europe.html
Oldest Known DNA Offers Glimpse of a Once-Lush Arctic: https://www.nytimes.com/2022/12/07/s...d-species.html
Happy Birthday, Omicron: https://www.nytimes.com/2022/11/26/s...evolution.html
The Very Territorial Caterpillar: https://www.nytimes.com/2025/04/04/s...ibrations.html
Scientists Reveal the Hairy Truth About Giant Ground Sloths: https://www.nytimes.com/2025/04/03/s...-hair-fur.html
This Tree Wants to Be Struck by Lightning: https://www.nytimes.com/2025/04/01/s...ainforest.html
Eating ‘Family Style’ May Have Set the Stage for Life as We Know It: https://www.nytimes.com/2025/03/31/s...n-physics.html
Foie Gras That Skips the Force-Feeding Is Developed by Physicists: https://www.nytimes.com/2025/03/25/s...e-physics.html
Trump Administration Cuts Funding and Staff for Flagship Climate Report: https://www.nytimes.com/2025/04/09/c...ssessment.html
NOAA Staffing Cuts Threaten Years of Salmon Harvests: https://www.nytimes.com/2025/04/09/c...ts-salmon.html
Trump Threatens Climate Policies in the States: https://www.nytimes.com/2025/04/09/c...he-states.html
Trump Administration Cuts Research Funding, Claiming It Creates ‘Climate Anxiety’: https://www.nytimes.com/2025/04/09/c...-research.html
Found section: Science
Kennedy Attends Funeral of Texas Girl Who Died of Measles: https://www.nytimes.com/2025/04/06/h...ath-texas.html
Why Measles Outbreaks May Be the New Normal: https://www.nytimes.com/2025/04/05/h...s-kennedy.html
Many Doctors Have Never Seen Measles Before: https://www.nytimes.com/2025/04/05/w...treatment.html
Dementia May Not Always Be the Threat It Is Now. Here’s Why.: https://www.nytimes.com/2025/03/22/h...s-elderly.html
Why Older People May Not Need to Watch Blood Sugar So Closely: https://www.nytimes.com/2025/03/10/h...sugar-age.html
New Insights Into Older Hearts: https://www.nytimes.com/2025/02/15/h...ase-aging.html
These Settings Aren’t Real. But for Dementia Patients, What Is?: https://www.nytimes.com/2025/02/01/h...-settings.html
When the Retirement Community Goes Bankrupt: https://www.nytimes.com/2025/01/18/h...ankruptcy.html
Massage Can Help After a Workout, But Not for the Reason You Think: https://www.nytimes.com/2025/04/09/w...-recovery.html
The More Protein, the Better?: https://www.nytimes.com/2025/04/09/w...act-check.html
What Are Microplastics Doing to Our Bodies? This Lab Is Racing to Find Out.: https://www.nytimes.com/2025/04/08/w...cs-health.html
It’s Now Even Easier to Test for S.T.I.s: https://www.nytimes.com/2025/04/08/w...ome-tests.html
Do Healthy Breakfast Cereals Exist?: https://www.nytimes.com/2025/04/08/w...st-cereal.html
Found section: Health
Singer Sues Met Opera Over Firing for Post-Pregnancy Vocal Problems: https://www.nytimes.com/2025/04/09/a...met-opera.html
John Nelson, Conductor Who Got France to Cherish Berlioz, Dies at 83: https://www.nytimes.com/2025/04/09/a...lson-dead.html
She Knocks the Cobwebs Off the Violin Repertory: https://www.nytimes.com/2025/04/07/a...lharmonic.html
How Online Rage Invaded a 151-Year-Old Intellectual Retreat: https://www.nytimes.com/2025/04/03/n...n-rushdie.html
Martha Argerich, la esquiva y enigmática ‘diosa’ del piano: https://www.nytimes.com/es/2025/04/0...-pianista.html
Found section: Music
How to Look Like Yourself on Your Wedding Day: https://www.nytimes.com/2025/04/05/s...p-wedding.html
An Epic Celebration in Guatemala, Ruins and Volcano Included: https://www.nytimes.com/2025/04/04/s...o-wedding.html
Starting a New Life Together, With Wellness Top of Mind: https://www.nytimes.com/2025/04/03/s...s-wedding.html
Hey D.J.! (Don’t Play That Song): https://www.nytimes.com/2025/03/29/s...-dj-music.html
For a Bus Driver and a Salon Manager, a Detour on the Path to Parenthood: https://www.nytimes.com/2025/03/28/s...o-wedding.html
Tiny Love Stories: ‘This Unusual Wooing Worked’: https://www.nytimes.com/2025/04/09/s...ng-worked.html
Let Yourself Rage With Poet Laureate Ada Limón: https://www.nytimes.com/2025/04/09/p...y-emotion.html
Why I Lied About Being Married: https://www.nytimes.com/2025/04/04/s...g-married.html
Tiny Love Stories: ‘Breathing Felt Like Betrayal’: https://www.nytimes.com/2025/04/02/s...-betrayal.html
My Brother Has Schizophrenia. This Is How I Love Him.: https://www.nytimes.com/2025/04/02/p...zophrenia.html
Found section: Style
Traceback (most recent call last):
File "runpy.py", line 198, in _run_module_as_main
File "runpy.py", line 88, in _run_code
File "site.py", line 47, in <module>
File "site.py", line 43, in main
File "calibre/utils/ipc/worker.py", line 215, in main
File "calibre/gui2/convert/gui_conversion.py", line 31, in gui_convert_recipe
File "calibre/gui2/convert/gui_conversion.py", line 25, in gui_convert
File "calibre/ebooks/conversion/plumber.py", line 1089, in run
File "calibre/customize/conversion.py", line 242, in __call__
File "calibre/ebooks/conversion/plugins/recipe_input.py", line 153, in convert
File "calibre/web/feeds/news.py", line 1121, in download
File "calibre/web/feeds/news.py", line 1299, in build_index
File "<string>", line 274, in parse_index
File "<string>", line 261, in parse_web_sections
File "<string>", line 335, in parse_web_section
KeyError: 'collectionsPage'